[INFO] crate differential-formula 0.1.1 is already in cache
[INFO] checking differential-formula-0.1.1 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate differential-formula 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate differential-formula 0.1.1 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate differential-formula 0.1.1
[INFO] finished tweaking crates.io crate differential-formula 0.1.1
[INFO] tweaked toml for crates.io crate differential-formula 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate differential-formula 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 08065f1e9ab08756fa23eaeaa2666fede977f4683ff9b6018b79f4c0f8c17f45
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "08065f1e9ab08756fa23eaeaa2666fede977f4683ff9b6018b79f4c0f8c17f45"`
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking timely_logging v0.11.1
[INFO] [stderr]     Checking timely_bytes v0.11.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling once_cell v1.2.0
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-bigint v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling im v14.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking bitmaps v2.0.0
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]    Compiling readonly v0.1.5
[INFO] [stderr]    Compiling enum_dispatch v0.2.0
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]     Checking nom v5.0.1
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking sized-chunks v0.5.1
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking timely_communication v0.11.1
[INFO] [stderr]     Checking timely v0.11.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking differential-dataflow v0.11.0
[INFO] [stderr]     Checking differential-formula v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/constraint.rs:217:1
[INFO] [stderr]     |
[INFO] [stderr] 217 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/constraint.rs:217:1
[INFO] [stderr]     |
[INFO] [stderr] 217 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/expression.rs:296:1
[INFO] [stderr]     |
[INFO] [stderr] 296 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/expression.rs:296:1
[INFO] [stderr]     |
[INFO] [stderr] 296 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]   --> src/parser.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[enum_dispatch]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    | |
[INFO] [stderr]    | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]    | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]   --> src/parser.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[enum_dispatch]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/parser.rs:542:1
[INFO] [stderr]     |
[INFO] [stderr] 542 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/parser.rs:542:1
[INFO] [stderr]     |
[INFO] [stderr] 542 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/parser.rs:555:1
[INFO] [stderr]     |
[INFO] [stderr] 555 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/parser.rs:555:1
[INFO] [stderr]     |
[INFO] [stderr] 555 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/parser.rs:636:1
[INFO] [stderr]     |
[INFO] [stderr] 636 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/parser.rs:636:1
[INFO] [stderr]     |
[INFO] [stderr] 636 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/term.rs:457:1
[INFO] [stderr]     |
[INFO] [stderr] 457 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/term.rs:457:1
[INFO] [stderr]     |
[INFO] [stderr] 457 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]   --> src/type_system.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | #[enum_dispatch(Type)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    | |
[INFO] [stderr]    | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]    | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/constraint.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stderr]  --> src/constraint.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::convert::TryInto;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/constraint.rs:11:32
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/engine.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExchangeData`
[INFO] [stderr]   --> src/engine.rs:18:41
[INFO] [stderr]    |
[INFO] [stderr] 18 | use differential_dataflow::{Collection, ExchangeData};
[INFO] [stderr]    |                                         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Input`
[INFO] [stderr]   --> src/engine.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 | use differential_dataflow::input::{Input, InputSession};
[INFO] [stderr]    |                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JoinCore`
[INFO] [stderr]   --> src/engine.rs:20:52
[INFO] [stderr]    |
[INFO] [stderr] 20 | use differential_dataflow::operators::join::{Join, JoinCore};
[INFO] [stderr]    |                                                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/engine.rs:343:27
[INFO] [stderr]     |
[INFO] [stderr] 343 |             );            ;
[INFO] [stderr]     |                           ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/expression.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/expression.rs:12:32
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::Any`
[INFO] [stderr]  --> src/rule.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::any::Any;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/rule.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/rule.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/rule.rs:15:32
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/type_system.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display`, `Formatter`
[INFO] [stderr]  --> src/type_system.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]   |                       ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::*`
[INFO] [stderr]  --> src/util.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::hash_map::Keys`
[INFO] [stderr]  --> src/util.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::hash_map::Keys;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/constraint.rs:217:1
[INFO] [stderr]     |
[INFO] [stderr] 217 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/constraint.rs:217:1
[INFO] [stderr]     |
[INFO] [stderr] 217 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/expression.rs:296:1
[INFO] [stderr]     |
[INFO] [stderr] 296 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/expression.rs:296:1
[INFO] [stderr]     |
[INFO] [stderr] 296 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]   --> src/parser.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[enum_dispatch]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    | |
[INFO] [stderr]    | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]    | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]   --> src/parser.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[enum_dispatch]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/parser.rs:542:1
[INFO] [stderr]     |
[INFO] [stderr] 542 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/parser.rs:542:1
[INFO] [stderr]     |
[INFO] [stderr] 542 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/parser.rs:555:1
[INFO] [stderr]     |
[INFO] [stderr] 555 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/parser.rs:555:1
[INFO] [stderr]     |
[INFO] [stderr] 555 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/parser.rs:636:1
[INFO] [stderr]     |
[INFO] [stderr] 636 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/parser.rs:636:1
[INFO] [stderr]     |
[INFO] [stderr] 636 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]    --> src/term.rs:457:1
[INFO] [stderr]     |
[INFO] [stderr] 457 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr]     | |
[INFO] [stderr]     | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]     | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `inner` in this scope
[INFO] [stderr]    --> src/term.rs:457:1
[INFO] [stderr]     |
[INFO] [stderr] 457 | #[enum_dispatch]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0424]: expected value, found module `self`
[INFO] [stderr]   --> src/type_system.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | #[enum_dispatch(Type)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    | |
[INFO] [stderr]    | `self` value is a keyword only available in methods with a `self` parameter
[INFO] [stderr]    | this function doesn't have a `self` parameter
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/constraint.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stderr]  --> src/constraint.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::convert::TryInto;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/constraint.rs:11:32
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/engine.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExchangeData`
[INFO] [stderr]   --> src/engine.rs:18:41
[INFO] [stderr]    |
[INFO] [stderr] 18 | use differential_dataflow::{Collection, ExchangeData};
[INFO] [stderr]    |                                         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Input`
[INFO] [stderr]   --> src/engine.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 | use differential_dataflow::input::{Input, InputSession};
[INFO] [stderr]    |                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JoinCore`
[INFO] [stderr]   --> src/engine.rs:20:52
[INFO] [stderr]    |
[INFO] [stderr] 20 | use differential_dataflow::operators::join::{Join, JoinCore};
[INFO] [stderr]    |                                                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/engine.rs:343:27
[INFO] [stderr]     |
[INFO] [stderr] 343 |             );            ;
[INFO] [stderr]     |                           ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/expression.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/expression.rs:12:32
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::Any`
[INFO] [stderr]  --> src/rule.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::any::Any;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/rule.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/rule.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/rule.rs:15:32
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/type_system.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display`, `Formatter`
[INFO] [stderr]  --> src/type_system.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]   |                       ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::*`
[INFO] [stderr]  --> src/util.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::hash_map::Keys`
[INFO] [stderr]  --> src/util.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::hash_map::Keys;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `timely::dataflow::operators`
[INFO] [stderr]   --> src/engine.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use timely::dataflow::operators::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 15 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0424, E0425.
[INFO] [stderr] For more information about an error, try `rustc --explain E0424`.
[INFO] [stderr] error: could not compile `differential-formula`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `timely::dataflow::operators`
[INFO] [stderr]   --> src/engine.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use timely::dataflow::operators::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 15 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0424, E0425.
[INFO] [stderr] For more information about an error, try `rustc --explain E0424`.
[INFO] [stderr] error: could not compile `differential-formula`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "08065f1e9ab08756fa23eaeaa2666fede977f4683ff9b6018b79f4c0f8c17f45"`
[INFO] running `"docker" "rm" "-f" "08065f1e9ab08756fa23eaeaa2666fede977f4683ff9b6018b79f4c0f8c17f45"`
[INFO] [stdout] 08065f1e9ab08756fa23eaeaa2666fede977f4683ff9b6018b79f4c0f8c17f45